Your smartphone should be able to tell you much of this info. My Android
phone has an app called "Altitude" that provides this information using the
built-in GPS in my Motorola Atrix 4G. It doesn't report accuracy values,
but once it settles on a reading, it doesn't move much. I am sure there are
better apps. My Blackberry Curve of 2007 would report accuracy values of 3m
- so I don't think the GPS in a modern smartphone is all that inaccurate.
I know that the item below satisfies none of the requirements that Inch
stated, but this is another item to put in any (modern-ish) vehicle...
http://www.ultra-gauge.com/ultragauge/index.htm
On Sat, Feb 16, 2013 at 6:05 PM, <eric@megageek.com> wrote:
> I am looking for an add-on clock and external thermometer for my truck.
> Anyone know of one.
>
> Ideally, it would be hard wired to the truck (read <no batteries>) and it
> would be back lit. (one that came on with the truck would be perfect.)
>
> Thanks.
>
> Eric P
> "Be as beneficent as the sun or the sea, but if your rights as a rational
> being are trenched on, die on the first inch of your territory." Ralph
> Waldo Emerson
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